Day 46 Deadlifts & a stiff back

I haven't done deadlifts for ever, so what's got some deadlifts?

 Hero WOD: PK

WOD Type: For Time

5 rounds
10 back squats (225 pounds)
10 deadlifts (275 pounds)
400-meter sprint
Rest 2 minutes

 There is always something with Wods that you look at, and your like that shouldn't be to bad. Wrong!  Not sure if it's cause I had a 20yr stongman competior at the gym who offers to do it with me. So in my mind I am like well he is stronger then you, so your only way is to push the pace. Well thanks Mac, we pushed and it was fucking hard. Insane tight back on the run, and I am not sure if it's my poor technique in squats or my terriable technique in deadlifts. I would never pushed so hard unless someone was with me, so thanks to Mac for making a hard workout even harder. Oh and my knees for the rest of the day let me know what it will feel like to be a 90 year old man.48 done, 13 to go.

 hero wods

U.S. Army Capt. Andrew Pedersen-Keel, of South Miami, Florida, died March 11, 2013. The 28-year-old was assigned to 1st Battalion, 3rd Special Forces Group (Airborne), in Fort Bragg, North Carolina. Pedersen-Keel was fatally injured in Jalrez District, Afghanistan, from small-arms fire from an Afghan security-forces member. He is survived by his mother and stepfather, Helen Pedersen Keiser and Bob Keiser; father, Henry Keel; sister, Mary Elizabeth Keel; and fiancèe, Celeste Pizza.